Warning: Permanently added '10.128.1.74' (ED25519) to the list of known hosts. executing program [ 50.198523][ T3488] [ 50.202841][ T3488] ===================================================== [ 50.210313][ T3488] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 50.221000][ T3488] 5.15.126-syzkaller #0 Not tainted [ 50.226192][ T3488] ----------------------------------------------------- [ 50.233235][ T3488] syz-executor236/3488 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 50.241656][ T3488] ffffffff8c9dfba0 (fs_reclaim){+.+.}-{0:0}, at: slab_pre_alloc_hook+0x22/0xc0 [ 50.250725][ T3488] [ 50.250725][ T3488] and this task is already holding: [ 50.260043][ T3488] ffffffff8da20808 (noop_qdisc.q.lock){+.-.}-{2:2}, at: netem_change+0x257/0x20c0 [ 50.269883][ T3488] which would create a new lock dependency: [ 50.276116][ T3488] (noop_qdisc.q.lock){+.-.}-{2:2} -> (fs_reclaim){+.+.}-{0:0} [ 50.284066][ T3488] [ 50.284066][ T3488] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 50.294064][ T3488] (noop_qdisc.q.lock){+.-.}-{2:2} [ 50.294115][ T3488] [ 50.294115][ T3488] ... which became SOFTIRQ-irq-safe at: [ 50.307340][ T3488] lock_acquire+0x1db/0x4f0 [ 50.311923][ T3488] _raw_spin_lock+0x2a/0x40 [ 50.316521][ T3488] net_tx_action+0x6c5/0x8e0 [ 50.321306][ T3488] __do_softirq+0x3b3/0x93a [ 50.325986][ T3488] do_softirq+0x162/0x240 [ 50.330509][ T3488] __local_bh_enable_ip+0x1b1/0x1f0 [ 50.335815][ T3488] dev_deactivate_many+0x524/0xbf0 [ 50.341092][ T3488] dev_deactivate+0x177/0x270 [ 50.345924][ T3488] linkwatch_do_dev+0x104/0x160 [ 50.350865][ T3488] __linkwatch_run_queue+0x4ca/0x7f0 [ 50.356347][ T3488] linkwatch_event+0x48/0x50 [ 50.361165][ T3488] process_one_work+0x8a1/0x10c0 [ 50.366195][ T3488] worker_thread+0xaca/0x1280 [ 50.371073][ T3488] kthread+0x3f6/0x4f0 [ 50.375213][ T3488] ret_from_fork+0x1f/0x30 [ 50.379971][ T3488] [ 50.379971][ T3488] to a SOFTIRQ-irq-unsafe lock: [ 50.387169][ T3488] (fs_reclaim){+.+.}-{0:0} [ 50.387189][ T3488] [ 50.387189][ T3488] ... which became SOFTIRQ-irq-unsafe at: [ 50.399918][ T3488] ... [ 50.399928][ T3488] lock_acquire+0x1db/0x4f0 [ 50.407213][ T3488] fs_reclaim_acquire+0x83/0x120 [ 50.412327][ T3488] slab_pre_alloc_hook+0x22/0xc0 [ 50.417569][ T3488] kmem_cache_alloc_trace+0x49/0x290 [ 50.423289][ T3488] wq_numa_init+0x122/0x49f [ 50.427884][ T3488] workqueue_init+0x18/0x5e1 [ 50.432664][ T3488] kernel_init_freeable+0x40a/0x5c5 [ 50.437936][ T3488] kernel_init+0x19/0x290 [ 50.442358][ T3488] ret_from_fork+0x1f/0x30 [ 50.447248][ T3488] [ 50.447248][ T3488] other info that might help us debug this: [ 50.447248][ T3488] [ 50.457641][ T3488] Possible interrupt unsafe locking scenario: [ 50.457641][ T3488] [ 50.466032][ T3488] CPU0 CPU1 [ 50.471801][ T3488] ---- ---- [ 50.477149][ T3488] lock(fs_reclaim); [ 50.481952][ T3488] local_irq_disable(); [ 50.488766][ T3488] lock(noop_qdisc.q.lock); [ 50.495969][ T3488] lock(fs_reclaim); [ 50.502665][ T3488] [ 50.506195][ T3488] lock(noop_qdisc.q.lock); [ 50.510942][ T3488] [ 50.510942][ T3488] *** DEADLOCK *** [ 50.510942][ T3488] [ 50.519060][ T3488] 2 locks held by syz-executor236/3488: [ 50.524837][ T3488] #0: ffffffff8d9e1148 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x94c/0xee0 [ 50.534445][ T3488] #1: ffffffff8da20808 (noop_qdisc.q.lock){+.-.}-{2:2}, at: netem_change+0x257/0x20c0 [ 50.544296][ T3488] [ 50.544296][ T3488] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 50.555379][ T3488] -> (noop_qdisc.q.lock){+.-.}-{2:2} { [ 50.560832][ T3488] HARDIRQ-ON-W at: [ 50.564905][ T3488] lock_acquire+0x1db/0x4f0 [ 50.571176][ T3488] _raw_spin_lock+0x2a/0x40 [ 50.577421][ T3488] __dev_queue_xmit+0xad6/0x3230 [ 50.584239][ T3488] tx+0x64/0x100 [ 50.589432][ T3488] kthread+0x234/0x440 [ 50.595228][ T3488] kthread+0x3f6/0x4f0 [ 50.600950][ T3488] ret_from_fork+0x1f/0x30 [ 50.607028][ T3488] IN-SOFTIRQ-W at: [ 50.610986][ T3488] lock_acquire+0x1db/0x4f0 [ 50.617126][ T3488] _raw_spin_lock+0x2a/0x40 [ 50.623265][ T3488] net_tx_action+0x6c5/0x8e0 [ 50.629687][ T3488] __do_softirq+0x3b3/0x93a [ 50.635833][ T3488] do_softirq+0x162/0x240 [ 50.641799][ T3488] __local_bh_enable_ip+0x1b1/0x1f0 [ 50.648632][ T3488] dev_deactivate_many+0x524/0xbf0 [ 50.655375][ T3488] dev_deactivate+0x177/0x270 [ 50.661770][ T3488] linkwatch_do_dev+0x104/0x160 [ 50.668257][ T3488] __linkwatch_run_queue+0x4ca/0x7f0 [ 50.675178][ T3488] linkwatch_event+0x48/0x50 [ 50.681486][ T3488] process_one_work+0x8a1/0x10c0 [ 50.688054][ T3488] worker_thread+0xaca/0x1280 [ 50.694560][ T3488] kthread+0x3f6/0x4f0 [ 50.700372][ T3488] ret_from_fork+0x1f/0x30 [ 50.706423][ T3488] INITIAL USE at: [ 50.710471][ T3488] lock_acquire+0x1db/0x4f0 [ 50.716847][ T3488] _raw_spin_lock+0x2a/0x40 [ 50.723151][ T3488] __dev_queue_xmit+0xad6/0x3230 [ 50.729660][ T3488] tx+0x64/0x100 [ 50.734948][ T3488] kthread+0x234/0x440 [ 50.740575][ T3488] kthread+0x3f6/0x4f0 [ 50.746418][ T3488] ret_from_fork+0x1f/0x30 [ 50.752536][ T3488] } [ 50.755024][ T3488] ... key at: [] noop_qdisc+0x108/0x320 [ 50.762809][ T3488] [ 50.762809][ T3488] the dependencies between the lock to be acquired [ 50.762817][ T3488] and SOFTIRQ-irq-unsafe lock: [ 50.776312][ T3488] -> (fs_reclaim){+.+.}-{0:0} { [ 50.781263][ T3488] HARDIRQ-ON-W at: [ 50.785230][ T3488] lock_acquire+0x1db/0x4f0 [ 50.792585][ T3488] fs_reclaim_acquire+0x83/0x120 [ 50.799254][ T3488] slab_pre_alloc_hook+0x22/0xc0 [ 50.806016][ T3488] kmem_cache_alloc_trace+0x49/0x290 [ 50.813202][ T3488] wq_numa_init+0x122/0x49f [ 50.819355][ T3488] workqueue_init+0x18/0x5e1 [ 50.825687][ T3488] kernel_init_freeable+0x40a/0x5c5 [ 50.832623][ T3488] kernel_init+0x19/0x290 [ 50.838592][ T3488] ret_from_fork+0x1f/0x30 [ 50.844657][ T3488] SOFTIRQ-ON-W at: [ 50.848719][ T3488] lock_acquire+0x1db/0x4f0 [ 50.854865][ T3488] fs_reclaim_acquire+0x83/0x120 [ 50.861452][ T3488] slab_pre_alloc_hook+0x22/0xc0 [ 50.868047][ T3488] kmem_cache_alloc_trace+0x49/0x290 [ 50.875136][ T3488] wq_numa_init+0x122/0x49f [ 50.881503][ T3488] workqueue_init+0x18/0x5e1 [ 50.887736][ T3488] kernel_init_freeable+0x40a/0x5c5 [ 50.894567][ T3488] kernel_init+0x19/0x290 [ 50.900540][ T3488] ret_from_fork+0x1f/0x30 [ 50.906712][ T3488] INITIAL USE at: [ 50.910683][ T3488] lock_acquire+0x1db/0x4f0 [ 50.916927][ T3488] fs_reclaim_acquire+0x83/0x120 [ 50.924722][ T3488] slab_pre_alloc_hook+0x22/0xc0 [ 50.931791][ T3488] kmem_cache_alloc_trace+0x49/0x290 [ 50.938822][ T3488] wq_numa_init+0x122/0x49f [ 50.944955][ T3488] workqueue_init+0x18/0x5e1 [ 50.951086][ T3488] kernel_init_freeable+0x40a/0x5c5 [ 50.957915][ T3488] kernel_init+0x19/0x290 [ 50.963900][ T3488] ret_from_fork+0x1f/0x30 [ 50.969869][ T3488] } [ 50.972351][ T3488] ... key at: [] __fs_reclaim_map+0x0/0x160 [ 50.980313][ T3488] ... acquired at: [ 50.984308][ T3488] lock_acquire+0x1db/0x4f0 [ 50.988993][ T3488] fs_reclaim_acquire+0x83/0x120 [ 50.994103][ T3488] slab_pre_alloc_hook+0x22/0xc0 [ 50.999203][ T3488] __kmalloc_node+0x71/0x390 [ 51.004044][ T3488] kvmalloc_node+0x80/0x140 [ 51.008705][ T3488] get_dist_table+0x83/0x2c0 [ 51.013450][ T3488] netem_change+0xa05/0x20c0 [ 51.018211][ T3488] netem_init+0x58/0xb0 [ 51.022605][ T3488] qdisc_create+0x8ae/0x1390 [ 51.027431][ T3488] tc_modify_qdisc+0xac5/0x1710 [ 51.032654][ T3488] rtnetlink_rcv_msg+0x993/0xee0 [ 51.037864][ T3488] netlink_rcv_skb+0x1cf/0x410 [ 51.042796][ T3488] netlink_unicast+0x7b6/0x980 [ 51.047890][ T3488] netlink_sendmsg+0xa30/0xd60 [ 51.053863][ T3488] ____sys_sendmsg+0x59e/0x8f0 [ 51.058780][ T3488] ___sys_sendmsg+0x252/0x2e0 [ 51.063606][ T3488] __se_sys_sendmsg+0x19a/0x260 [ 51.068702][ T3488] do_syscall_64+0x3d/0xb0 [ 51.073271][ T3488] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 51.079546][ T3488] [ 51.081854][ T3488] [ 51.081854][ T3488] stack backtrace: [ 51.087733][ T3488] CPU: 0 PID: 3488 Comm: syz-executor236 Not tainted 5.15.126-syzkaller #0 [ 51.096337][ T3488] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 51.106386][ T3488] Call Trace: [ 51.109778][ T3488] [ 51.112715][ T3488] dump_stack_lvl+0x1e3/0x2cb [ 51.122266][ T3488] ? io_uring_drop_tctx_refs+0x19d/0x19d [ 51.128010][ T3488] ? panic+0x84d/0x84d [ 51.132259][ T3488] ? print_shortest_lock_dependencies+0xee/0x150 [ 51.138706][ T3488] validate_chain+0x4cfe/0x58b0 [ 51.143656][ T3488] ? reacquire_held_locks+0x660/0x660 [ 51.149004][ T3488] ? validate_chain+0x112/0x58b0 [ 51.154202][ T3488] ? reacquire_held_locks+0x660/0x660 [ 51.159567][ T3488] ? mark_lock+0x98/0x340 [ 51.163893][ T3488] __lock_acquire+0x1295/0x1ff0 [ 51.168730][ T3488] lock_acquire+0x1db/0x4f0 [ 51.173212][ T3488] ? slab_pre_alloc_hook+0x22/0xc0 [ 51.178302][ T3488] ? read_lock_is_recursive+0x10/0x10 [ 51.183657][ T3488] fs_reclaim_acquire+0x83/0x120 [ 51.188572][ T3488] ? slab_pre_alloc_hook+0x22/0xc0 [ 51.193659][ T3488] slab_pre_alloc_hook+0x22/0xc0 [ 51.198689][ T3488] __kmalloc_node+0x71/0x390 [ 51.203343][ T3488] ? kvmalloc_node+0x80/0x140 [ 51.208000][ T3488] ? __bpf_trace_softirq+0x10/0x10 [ 51.213089][ T3488] kvmalloc_node+0x80/0x140 [ 51.217582][ T3488] get_dist_table+0x83/0x2c0 [ 51.222162][ T3488] netem_change+0xa05/0x20c0 [ 51.227344][ T3488] ? netem_destroy+0xb0/0xb0 [ 51.231928][ T3488] ? debug_object_init+0x10/0x10 [ 51.236868][ T3488] ? memset+0x1f/0x40 [ 51.241003][ T3488] ? lockdep_init_map_type+0x9d/0x8d0 [ 51.246446][ T3488] ? memset+0x1f/0x40 [ 51.250406][ T3488] ? __hrtimer_init+0x181/0x260 [ 51.255496][ T3488] netem_init+0x58/0xb0 [ 51.259645][ T3488] ? qdisc_peek_dequeued+0x220/0x220 [ 51.264928][ T3488] qdisc_create+0x8ae/0x1390 [ 51.269536][ T3488] ? qdisc_notify+0x380/0x380 [ 51.274362][ T3488] ? apparmor_capable+0x12e/0x190 [ 51.279363][ T3488] tc_modify_qdisc+0xac5/0x1710 [ 51.284193][ T3488] ? rcu_lock_release+0x20/0x20 [ 51.289114][ T3488] ? rcu_lock_release+0x20/0x20 [ 51.293946][ T3488] rtnetlink_rcv_msg+0x993/0xee0 [ 51.298892][ T3488] ? reacquire_held_locks+0x660/0x660 [ 51.304329][ T3488] ? rtnetlink_bind+0x80/0x80 [ 51.308994][ T3488] ? is_bpf_text_address+0x24f/0x260 [ 51.315262][ T3488] ? stack_trace_save+0x1c0/0x1c0 [ 51.320440][ T3488] ? __kernel_text_address+0x94/0x100 [ 51.325798][ T3488] ? unwind_get_return_address+0x49/0x80 [ 51.331407][ T3488] ? arch_stack_walk+0xf3/0x140 [ 51.336236][ T3488] ? mark_lock+0x98/0x340 [ 51.340545][ T3488] ? mark_lock+0x98/0x340 [ 51.344851][ T3488] ? __lock_acquire+0x1295/0x1ff0 [ 51.349949][ T3488] netlink_rcv_skb+0x1cf/0x410 [ 51.354702][ T3488] ? rtnetlink_bind+0x80/0x80 [ 51.359356][ T3488] ? netlink_ack+0xb10/0xb10 [ 51.363925][ T3488] netlink_unicast+0x7b6/0x980 [ 51.368666][ T3488] ? netlink_detachskb+0x90/0x90 [ 51.373590][ T3488] ? 0xffffffff81000000 [ 51.377722][ T3488] ? __check_object_size+0x300/0x410 [ 51.382986][ T3488] ? bpf_lsm_netlink_send+0x5/0x10 [ 51.388161][ T3488] netlink_sendmsg+0xa30/0xd60 [ 51.392904][ T3488] ? netlink_getsockopt+0x5b0/0x5b0 [ 51.398113][ T3488] ? aa_sock_msg_perm+0x91/0x150 [ 51.403028][ T3488] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 51.408304][ T3488] ? security_socket_sendmsg+0x7d/0xa0 [ 51.413833][ T3488] ? netlink_getsockopt+0x5b0/0x5b0 [ 51.419010][ T3488] ____sys_sendmsg+0x59e/0x8f0 [ 51.423753][ T3488] ? iovec_from_user+0x300/0x390 [ 51.428671][ T3488] ? __sys_sendmsg_sock+0x30/0x30 [ 51.433675][ T3488] ___sys_sendmsg+0x252/0x2e0 [ 51.438330][ T3488] ? __sys_sendmsg+0x260/0x260 [ 51.443077][ T3488] ? __lock_acquire+0x1295/0x1ff0 [ 51.448883][ T3488] ? read_lock_is_recursive+0x10/0x10 [ 51.454231][ T3488] ? __context_tracking_exit+0x4c/0x80 [ 51.459665][ T3488] ? __fdget+0x158/0x220 [ 51.463889][ T3488] __se_sys_sendmsg+0x19a/0x260 [ 51.468716][ T3488] ? __x64_sys_sendmsg+0x80/0x80 [ 51.473756][ T3488] ? syscall_enter_from_user_mode+0x2e/0x230 [ 51.479737][ T3488] ? lockdep_hardirqs_on+0x94/0x130 [ 51.484948][ T3488] ? syscall_enter_from_user_mode+0x2e/0x230 [ 51.490915][ T3488] do_syscall_64+0x3d/0xb0 [ 51.495308][ T3488] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 51.501179][ T3488] RIP: 0033:0x7fd93f9ed8b9 [ 51.505573][ T3488] Code: 48 83 c4 28 c3 e8 27 18 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 51.525160][ T3488] RSP: 002b:00007fff59b2ca08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 51.533552][ T3488] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd93f9ed8b9 [ 51.541499][ T3488] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 51.549446][ T3488] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff59b2ca80 [ 51.557486][ T3488] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 51.565443][ T3488] R13: 00007fff59b2cc08 R14: 0000000000000001 R15: 0000000000000001 [ 51.573396][ T3488] [ 51.576465][ T3488] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:209 [ 51.585954][ T3488] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3488, name: syz-executor236 [ 51.595608][ T3488] INFO: lockdep is turned off. [ 51.600360][ T3488] Preemption disabled at: [ 51.600369][ T3488] [<0000000000000000>] 0x0 [ 51.609134][ T3488] CPU: 0 PID: 3488 Comm: syz-executor236 Not tainted 5.15.126-syzkaller #0 [ 51.617698][ T3488] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 51.627820][ T3488] Call Trace: [ 51.631081][ T3488] [ 51.634050][ T3488] dump_stack_lvl+0x1e3/0x2cb [ 51.638710][ T3488] ? io_uring_drop_tctx_refs+0x19d/0x19d [ 51.644329][ T3488] ? panic+0x84d/0x84d [ 51.648462][ T3488] ? rcu_is_watching+0x11/0xa0 [ 51.653314][ T3488] ? rcu_is_watching+0x11/0xa0 [ 51.658055][ T3488] ___might_sleep+0x547/0x6a0 [ 51.662713][ T3488] ? __might_sleep+0xc0/0xc0 [ 51.667282][ T3488] slab_pre_alloc_hook+0x44/0xc0 [ 51.672196][ T3488] __kmalloc_node+0x71/0x390 [ 51.676763][ T3488] ? kvmalloc_node+0x80/0x140 [ 51.681416][ T3488] ? __bpf_trace_softirq+0x10/0x10 [ 51.686502][ T3488] kvmalloc_node+0x80/0x140 [ 51.690998][ T3488] get_dist_table+0x83/0x2c0 [ 51.695683][ T3488] netem_change+0xa05/0x20c0 [ 51.700258][ T3488] ? netem_destroy+0xb0/0xb0 [ 51.704827][ T3488] ? debug_object_init+0x10/0x10 [ 51.709897][ T3488] ? memset+0x1f/0x40 [ 51.713888][ T3488] ? lockdep_init_map_type+0x9d/0x8d0 [ 51.719357][ T3488] ? memset+0x1f/0x40 [ 51.724206][ T3488] ? __hrtimer_init+0x181/0x260 [ 51.729145][ T3488] netem_init+0x58/0xb0 [ 51.733380][ T3488] ? qdisc_peek_dequeued+0x220/0x220 [ 51.738650][ T3488] qdisc_create+0x8ae/0x1390 [ 51.743305][ T3488] ? qdisc_notify+0x380/0x380 [ 51.747955][ T3488] ? apparmor_capable+0x12e/0x190 [ 51.752956][ T3488] tc_modify_qdisc+0xac5/0x1710 [ 51.757875][ T3488] ? rcu_lock_release+0x20/0x20 [ 51.762706][ T3488] ? rcu_lock_release+0x20/0x20 [ 51.767536][ T3488] rtnetlink_rcv_msg+0x993/0xee0 [ 51.772449][ T3488] ? reacquire_held_locks+0x660/0x660 [ 51.777811][ T3488] ? rtnetlink_bind+0x80/0x80 [ 51.782487][ T3488] ? is_bpf_text_address+0x24f/0x260 [ 51.787750][ T3488] ? stack_trace_save+0x1c0/0x1c0 [ 51.792748][ T3488] ? __kernel_text_address+0x94/0x100 [ 51.798096][ T3488] ? unwind_get_return_address+0x49/0x80 [ 51.803703][ T3488] ? arch_stack_walk+0xf3/0x140 [ 51.808533][ T3488] ? mark_lock+0x98/0x340 [ 51.813012][ T3488] ? mark_lock+0x98/0x340 [ 51.817317][ T3488] ? __lock_acquire+0x1295/0x1ff0 [ 51.822476][ T3488] netlink_rcv_skb+0x1cf/0x410 [ 51.827240][ T3488] ? rtnetlink_bind+0x80/0x80 [ 51.831898][ T3488] ? netlink_ack+0xb10/0xb10 [ 51.836470][ T3488] netlink_unicast+0x7b6/0x980 [ 51.841210][ T3488] ? netlink_detachskb+0x90/0x90 [ 51.846221][ T3488] ? 0xffffffff81000000 [ 51.850348][ T3488] ? __check_object_size+0x300/0x410 [ 51.855610][ T3488] ? bpf_lsm_netlink_send+0x5/0x10 [ 51.860698][ T3488] netlink_sendmsg+0xa30/0xd60 [ 51.865441][ T3488] ? netlink_getsockopt+0x5b0/0x5b0 [ 51.870623][ T3488] ? aa_sock_msg_perm+0x91/0x150 [ 51.875555][ T3488] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 51.880914][ T3488] ? security_socket_sendmsg+0x7d/0xa0 [ 51.886357][ T3488] ? netlink_getsockopt+0x5b0/0x5b0 [ 51.891741][ T3488] ____sys_sendmsg+0x59e/0x8f0 [ 51.896659][ T3488] ? iovec_from_user+0x300/0x390 [ 51.901574][ T3488] ? __sys_sendmsg_sock+0x30/0x30 [ 51.906575][ T3488] ___sys_sendmsg+0x252/0x2e0 [ 51.911335][ T3488] ? __sys_sendmsg+0x260/0x260 [ 51.916408][ T3488] ? __lock_acquire+0x1295/0x1ff0 [ 51.921418][ T3488] ? read_lock_is_recursive+0x10/0x10 [ 51.926777][ T3488] ? __context_tracking_exit+0x4c/0x80 [ 51.932298][ T3488] ? __fdget+0x158/0x220 [ 51.936692][ T3488] __se_sys_sendmsg+0x19a/0x260 [ 51.941560][ T3488] ? __x64_sys_sendmsg+0x80/0x80 [ 51.946473][ T3488] ? syscall_enter_from_user_mode+0x2e/0x230 [ 51.952430][ T3488] ? lockdep_hardirqs_on+0x94/0x130 [ 51.957609][ T3488] ? syscall_enter_from_user_mode+0x2e/0x230 [ 51.963571][ T3488] do_syscall_64+0x3d/0xb0 [ 51.968055][ T3488] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 51.974161][ T3488] RIP: 0033:0x7fd93f9ed8b9 [ 51.978679][ T3488] Code: 48 83 c4 28 c3 e8 27 18 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 51.998272][ T3488] RSP: 002b:00007fff59b2ca08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 52.006672][ T3488] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd93f9ed8b9 [ 52.014735][ T3488] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 52.022690][ T3488] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff59b2ca80 [ 52.030766][ T3488] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 52.038832][ T3488] R13: 00007fff59b2cc08 R14: 0000000000000001 R15: 0000000000000001 [ 52.046811][ T3488]